I have a Compaq Presario SR1901WM desktop that will not power up. When I press the power button the first time, the green light on the front and the light that indicates the drive is working flashes on then right back off. I get no sounds coming from the tower from fans or anything. If I press the button again nothing happens.
I tried plugging it into another outlet and noticed that if I unplug the power cable and plug it back in a small green light comes on on the back of the tower just below where the power cable plugs in. It stays on until I press the power button and then I get the power and drive lights on the front of the tower flash on and off and the green light on the back goes out again.